US 12,459,253 B2
Liquid discharge apparatus
Masahiko Tsuyuki, Chino (JP); and Makoto Takamuku, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Sep. 29, 2023, as Appl. No. 18/478,251.
Claims priority of application No. 2022-158887 (JP), filed on Sep. 30, 2022.
Prior Publication US 2024/0109302 A1, Apr. 4, 2024
Int. Cl. B41J 2/045 (2006.01); B41J 29/377 (2006.01)
CPC B41J 2/04553 (2013.01) [B41J 2/04523 (2013.01); B41J 2/04541 (2013.01); B41J 2/04548 (2013.01); B41J 2/0455 (2013.01); B41J 2/04581 (2013.01); B41J 29/377 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A liquid discharge apparatus comprising:
a print head that discharges a liquid;
a substrate unit electrically coupled to the print head; and
a control circuit that controls operations of the print head and the substrate unit, wherein
the print head includes
a first discharge section that has a first piezoelectric element that is displaced by receiving a first driving signal and discharges a liquid by displacement of the first piezoelectric element, and
a first connector electrically coupled to the substrate unit, the substrate unit includes
a second connector that is electrically coupled to the print head by being fitted to the first connector,
a first drive circuit that outputs the first driving signal,
a temperature sensor that acquires environmental temperature, and
a wiring substrate provided with the first drive circuit and the temperature sensor, and
the control circuit controls the first drive circuit and the print head based on the environmental temperature acquired by the temperature sensor,
the wiring substrate is a rigid flexible substrate including a plurality of rigid members provided with the first drive circuit and the temperature sensor, and a flexible member more flexible than the plurality of rigid members
the flexible member includes a first surface, a second surface opposite to the first surface, a first region, a second region, and a third region,
the third region is positioned between the first region and the second region,
the plurality of rigid members include a first rigid member and a second rigid member,
the first rigid member includes a first front surface, and is laminated on the first surface of the first region such that the first front surface extends along the first surface,
the second rigid member includes a second front surface, and is laminated on the first surface of the second region such that the second front surface extends along the first surface,
the first drive circuit is provided on the first rigid member, and
the temperature sensor is provided on the second rigid member.